Add gizmo from https://cults3d.com/en/3d-model/art/gizmo-bust-30mb

* box v1

* Change to ASCII STL

models/.gitattributes

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+*large.stl filter=lfs diff=lfs merge=lfs -text

models/GeeXY-large.stl

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+size 98213084

models/box.obj

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models/box.step

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models/box.stl

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models/gizmo-large.stl

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